# Can not write MQTT Engine’s Tag

**URL:** <https://forum.inductiveautomation.com/t/can-not-write-mqtt-engine-s-tag/76245>\
**Category:** 3rd Party Modules\
**Tags:** perspective, ignition81\
**Created:** [July 12, 2023, 6:53am UTC](https://forum.inductiveautomation.com/t/can-not-write-mqtt-engine-s-tag/76245 "2023-07-12T06:53:24Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![deon.korb](https://avatars.discourse-cdn.com/v4/letter/d/8c91f0/32.png) [@deon.korb](https://forum.inductiveautomation.com/u/deon.korb)\
**Post date:** [July 12, 2023, 7:38am UTC](https://forum.inductiveautomation.com/t/can-not-write-mqtt-engine-s-tag/76245/2 "2023-07-12T07:38:10Z")

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This sounds familiar. Check the versions.

> [@MQTT Engine Custom Namespace Not Writeable](https://forum.inductiveautomation.com/t/mqtt-engine-custom-namespace-not-writeable/60611):
>
> My MQTT Engine namespaces seem to suddenly not be writeable anymore. This was working. The writeable option is definitely ticked: The AccessRights on the MQTT Engine tag provider seems to be Read\_Write: [image] Writing to it (either directly or via reference tag) always produces this: [image] I have upgraded to 8.1.17 and MQTT Engine v 4.0.11 in hopes of solving this, but no change. I use a change script on a reference tag to do the actual MQTT publish, but the script isn’t exec…

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